Designed to withstand the rigors of high performance photography and videography, the Steel CFexpress Type B Memory Card from Hoodman provides a storage capacity of 512GB and delivers sequential read speeds up to 1750 MB/s and sustained write speeds of 1050 MB/s for cameras compatible with CFexpress Type B. This card is rugged, durable, and can withstand temperatures ranging from -13 to 185°F. It is protected by a limited lifetime warranty.